batgrbproduct Analysis for Trigger=142851

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Mon Jan  7 11:36:23 EST 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger142851/GCN5_download_cron
======================================================================

  Trigger: 00142851      Segment: 000

  BAT Trigger Time: 141449419.136   [s; MET]
      Trigger Stop: 141449420.16   [s; MET]
               UTC: 2005-06-26T03:30:19.545140    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 337.088944061947   Dec: 54.1256712624889  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    33355
     Image Trigger?:     NO
     Rate S/N Ratio:     20.2731349327133  [ if not an image trigger ]
     Image S/N Ratio:    33355

  Flight Position:   [ source = BAT ]
    RA: 337.088944061947   Dec: 54.1256712624889  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 337.235349638385   Dec: 54.1568034021484  [deg; J2000]  
        { 22h 28m 56.5s , +54d 09' 24.5" }
         +/- 5.6664658445164 [arcmin] (estimated 90% radius based on SNR)
         +/- 3.37351517848458 [arcmin] (formal 1-sigma fit error)
    SNR: 2.55245436803487
    RA  =  22h 28m 56.5s  (337.235350 deg.)
    Dec =  54d  9' 24" (54.156803 deg.)
 
  Angular difference between Flight and Ground position is 5.474310 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     T50: 1.02399998903275 +/- 
        Measured from: 0
                   to: 1.02399998903275     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 1.02399998903275 second)
        Measured from: 0     
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 1.02399998903275     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total    -0.005570  -0.002153   0.026277   0.016820
           0.005690   0.006583   0.006881   0.007315 [error]
 Peak     -0.005570  -0.002153   0.026277   0.016820
           0.005690   0.006583   0.006881   0.007315 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 3.36e-10 1.86e-09 8.90e-09 1.79e-07 2.80e-08 1.73e-07   erg/cm2
              Error 6.29e-10 2.15e-09 7.40e-09 2.70e-07 1.74e-08 2.52e-07   erg/cm2
Peak flux Power-law 1.03e-02 3.00e-02 7.17e-02 4.71e-01 1.94e-01 5.86e-01   ph/cm2/s
              Error 1.94e-02 3.55e-02 6.02e-02 6.40e-01 1.63e-01 6.73e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.93e-10 2.35e-09 1.37e-08 2.94e-08 3.12e-08 1.04e-07   erg/cm2
              Error 3.34e-10 2.51e-09 7.48e-09 1.12e-07 1.74e-08 2.11e-07   erg/cm2
Peak flux Cutoff-PL 1.03e-02 3.00e-02 7.19e-02 4.69e-01 1.94e-01 5.79e-01   ph/cm2/s
              Error 1.94e-02 3.55e-02 6.02e-02 6.55e-01 1.63e-01 6.86e-01   ph/cm2/s
 
Fluence        Band 4.90e-11 1.50e-09 1.50e-08 2.50e-08 3.19e-08 6.83e-09   erg/cm2
              Error 7.57e-09 1.66e-08 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 3.51e-03 2.37e-02 1.15e-01 1.17e-01 2.29e-01 2.68e-01   ph/cm2/s
              Error 2.53e-02 4.79e-02 2.71e-01 8.77e-02 2.19e-01 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -0.243    1.593    -      -           1.31e-03 1.27e-03   69.735 57
CPL  -0.265    1.314    9999.3 5000.0      1.32e-03 1.29e-03   69.710 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -0.243    1.593    -      -           1.31e-03 1.27e-03   69.735 57
CPL  -0.265    1.314    9999.3 5000.0      1.32e-03 1.29e-03   69.710 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    1.024    0.000    1.024
T90     1.024    0.000    1.024
T50     1.024    0.000    1.024
Peak    1.024    0.000    1.024

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  337.2353 +54.1568 0.0751    1.8   97.6       0.0340     2.6  TRIG_00142851       
------------------------------------------
 
Foreground time interval of the image:
  0.000   1.024 (delta_t =   1.024 [sec])
Background time interval of the image:

Lightcurves

Notes:

1 s binning

From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval

64 ms binning

Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec

16 ms binning

From T100_start-5 s to T100_start+5 s

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.243345     ( -2.21669   0.970122 )
Norm@50keV  : 1.308907E-03    ( -1.308907E-03   1.234885E-03) )
------------------------------------------------------------
 Chi-Squared =      69.73534     using    59 PHA bins.
 Reduced chi-squared =      1.223427     for     57 degrees of freedom
 Null hypothesis probability = 0.120
 
Photon flux (15-150 keV)    in 1.024 sec: 0.193927 ( -0.193927  0.131195 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.79669e-08 ( -1.73743e-08  1.73727e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.264998     ( -1.64759   0.980810 )
Epeak [keV] : 9999.34      ( -9999.33 0.655273 )
Norm@50keV  : 1.324870E-03    ( -1.324870E-03   1.245931E-03) )
------------------------------------------------------------
 Chi-Squared =      69.70997     using    59 PHA bins.
 Reduced chi-squared =      1.244821     for     56 degrees of freedom
 Null hypothesis probability = 0.103
 
Photon flux (15-150 keV)    in 1.024 sec: 0.194141 ( -0.194141  0.131211 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.11635e-08 ( -1.70742e-08  1.77958e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.34143   ( -14.9995   4.720688E-04) )
beta        : -9.31586    ( -0.637679   19.3622 )
Epeak [keV] : 118.988      ( -102.707 47.4036 )
Norm@50keV   : 2.422362E-02    ( -6.368180E-02   0.174862 )
------------------------------------------------------------
 Chi-Squared =      66.13382     using    59 PHA bins.
 Reduced chi-squared =      1.202433     for     55 degrees of freedom
 Null hypothesis probability = 0.145
 
Photon flux (15-150 keV)    in 1.024 sec: 0.228618 ( -0.116108  0.059355 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.18841e-08 ( -1.60132e-08  1.71618e-08 ) ergs/cm2
 

Peak spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.243345     ( -2.21669   0.970122 )
Norm@50keV  : 1.308907E-03    ( -1.308907E-03   1.234885E-03) )
------------------------------------------------------------
 Chi-Squared =      69.73534     using    59 PHA bins.
 Reduced chi-squared =      1.223427     for     57 degrees of freedom
 Null hypothesis probability = 0.120
 
Photon flux (15-150 keV)    in 1.024 sec: 0.193927 ( -0.193927  0.131195 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.79669e-08 ( -1.73743e-08  1.73727e-08 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to    1.024 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.264998     ( -1.64759   0.980810 )
Epeak [keV] : 9999.34      ( -9999.33 0.655273 )
Norm@50keV  : 1.324870E-03    ( -1.324870E-03   1.245931E-03) )
------------------------------------------------------------
 Chi-Squared =      69.70997     using    59 PHA bins.
 Reduced chi-squared =      1.244821     for     56 degrees of freedom
 Null hypothesis probability = 0.103
 
Photon flux (15-150 keV)    in 1.024 sec: 0.194141 ( -0.194141  0.131211 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.11635e-08 ( -1.70742e-08  1.77958e-08 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to    1.024 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.34143   ( -14.9995   4.720688E-04) )
beta        : -9.31586    ( -0.637679   19.3622 )
Epeak [keV] : 118.988      ( -102.707 47.4036 )
Norm@50keV   : 2.422362E-02    ( -6.368180E-02   0.174862 )
------------------------------------------------------------
 Chi-Squared =      66.13382     using    59 PHA bins.
 Reduced chi-squared =      1.202433     for     55 degrees of freedom
 Null hypothesis probability = 0.145
 
Photon flux (15-150 keV)    in 1.024 sec: 0.228618 ( -0.116108  0.059355 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.18841e-08 ( -1.60132e-08  1.71618e-08 ) ergs/cm2
 
Plot creation:
Mon Jan  7 11:41:54 EST 2008